This standard BS EN 4639-001:2007 Aerospace series. Connectors, optical, rectangular, modular, multicontact, 1,25 diameter ferrule, with removable alignment sleeve holder is classified in these ICS categories:
49.060 Aerospace electric equipment and systems
This standard specifies the general characteristics, the conditions for qualification, acceptance and quality assurance, as well as the test programs and groups for rectangular multipin fibre optic connectors.